From abcea5197606396668c1901088f2114719e747cd Mon Sep 17 00:00:00 2001
From: morris <maoshengrong@espressif.com>
Date: Thu, 9 Jul 2020 22:03:11 +0800
Subject: [PATCH] ethernet: insert min assert time for PHY HW reset

Closes https://github.com/espressif/esp-idf/issues/5528
---
 components/esp_eth/src/esp_eth_phy_dm9051.c  | 1 +
 components/esp_eth/src/esp_eth_phy_dp83848.c | 1 +
 components/esp_eth/src/esp_eth_phy_ip101.c   | 1 +
 components/esp_eth/src/esp_eth_phy_ksz8041.c | 1 +
 components/esp_eth/src/esp_eth_phy_lan8720.c | 1 +
 components/esp_eth/src/esp_eth_phy_rtl8201.c | 1 +
 6 files changed, 6 insertions(+)

diff --git a/components/esp_eth/src/esp_eth_phy_dm9051.c b/components/esp_eth/src/esp_eth_phy_dm9051.c
index bfd93ce6b7..a19c1e69b3 100644
--- a/components/esp_eth/src/esp_eth_phy_dm9051.c
+++ b/components/esp_eth/src/esp_eth_phy_dm9051.c
@@ -193,6 +193,7 @@ static esp_err_t dm9051_reset_hw(esp_eth_phy_t *phy)
         esp_rom_gpio_pad_select_gpio(dm9051->reset_gpio_num);
         gpio_set_direction(dm9051->reset_gpio_num, GPIO_MODE_OUTPUT);
         gpio_set_level(dm9051->reset_gpio_num, 0);
+        ets_delay_us(100); // insert min input assert time
         gpio_set_level(dm9051->reset_gpio_num, 1);
     }
     return ESP_OK;
diff --git a/components/esp_eth/src/esp_eth_phy_dp83848.c b/components/esp_eth/src/esp_eth_phy_dp83848.c
index ce2e96cdd2..c83e50306a 100644
--- a/components/esp_eth/src/esp_eth_phy_dp83848.c
+++ b/components/esp_eth/src/esp_eth_phy_dp83848.c
@@ -182,6 +182,7 @@ static esp_err_t dp83848_reset_hw(esp_eth_phy_t *phy)
         esp_rom_gpio_pad_select_gpio(dp83848->reset_gpio_num);
         gpio_set_direction(dp83848->reset_gpio_num, GPIO_MODE_OUTPUT);
         gpio_set_level(dp83848->reset_gpio_num, 0);
+        ets_delay_us(100); // insert min input assert time
         gpio_set_level(dp83848->reset_gpio_num, 1);
     }
     return ESP_OK;
diff --git a/components/esp_eth/src/esp_eth_phy_ip101.c b/components/esp_eth/src/esp_eth_phy_ip101.c
index e05da282dd..0ab53b893b 100644
--- a/components/esp_eth/src/esp_eth_phy_ip101.c
+++ b/components/esp_eth/src/esp_eth_phy_ip101.c
@@ -222,6 +222,7 @@ static esp_err_t ip101_reset_hw(esp_eth_phy_t *phy)
         esp_rom_gpio_pad_select_gpio(ip101->reset_gpio_num);
         gpio_set_direction(ip101->reset_gpio_num, GPIO_MODE_OUTPUT);
         gpio_set_level(ip101->reset_gpio_num, 0);
+        ets_delay_us(100); // insert min input assert time
         gpio_set_level(ip101->reset_gpio_num, 1);
     }
     return ESP_OK;
diff --git a/components/esp_eth/src/esp_eth_phy_ksz8041.c b/components/esp_eth/src/esp_eth_phy_ksz8041.c
index a421b1ae08..b9a43f09c3 100644
--- a/components/esp_eth/src/esp_eth_phy_ksz8041.c
+++ b/components/esp_eth/src/esp_eth_phy_ksz8041.c
@@ -170,6 +170,7 @@ static esp_err_t ksz8041_reset_hw(esp_eth_phy_t *phy)
         esp_rom_gpio_pad_select_gpio(ksz8041->reset_gpio_num);
         gpio_set_direction(ksz8041->reset_gpio_num, GPIO_MODE_OUTPUT);
         gpio_set_level(ksz8041->reset_gpio_num, 0);
+        ets_delay_us(100); // insert min input assert time
         gpio_set_level(ksz8041->reset_gpio_num, 1);
     }
     return ESP_OK;
diff --git a/components/esp_eth/src/esp_eth_phy_lan8720.c b/components/esp_eth/src/esp_eth_phy_lan8720.c
index 52e27a9c22..3b4b9d50d5 100644
--- a/components/esp_eth/src/esp_eth_phy_lan8720.c
+++ b/components/esp_eth/src/esp_eth_phy_lan8720.c
@@ -267,6 +267,7 @@ static esp_err_t lan8720_reset_hw(esp_eth_phy_t *phy)
         esp_rom_gpio_pad_select_gpio(lan8720->reset_gpio_num);
         gpio_set_direction(lan8720->reset_gpio_num, GPIO_MODE_OUTPUT);
         gpio_set_level(lan8720->reset_gpio_num, 0);
+        ets_delay_us(100); // insert min input assert time
         gpio_set_level(lan8720->reset_gpio_num, 1);
     }
     return ESP_OK;
diff --git a/components/esp_eth/src/esp_eth_phy_rtl8201.c b/components/esp_eth/src/esp_eth_phy_rtl8201.c
index ce613348a6..dd9239d67f 100644
--- a/components/esp_eth/src/esp_eth_phy_rtl8201.c
+++ b/components/esp_eth/src/esp_eth_phy_rtl8201.c
@@ -176,6 +176,7 @@ static esp_err_t rtl8201_reset_hw(esp_eth_phy_t *phy)
         esp_rom_gpio_pad_select_gpio(rtl8201->reset_gpio_num);
         gpio_set_direction(rtl8201->reset_gpio_num, GPIO_MODE_OUTPUT);
         gpio_set_level(rtl8201->reset_gpio_num, 0);
+        ets_delay_us(100); // insert min input assert time
         gpio_set_level(rtl8201->reset_gpio_num, 1);
     }
     return ESP_OK;